Table 1: Association between hypertension in pregnancy and premature birth.

Prematurity

HTN+

n (%)

HTN

n (%)

OR (95% CI)

P value

Yes

97 (66.0)

28 (19.0)

4.38 (2.8-6.8)

0.001

No

50 (34.0)

119 (69.3)

Ref

Ref

HTN+: Hypertensive; HTN-: non hypertensive; OR: Odds Ratio; n: Frequency; %: percentage